In order to determine the source of chemical exposure from the perspective of mandatory law, forensic toxicology employs the instruments of analytical chemistry, witness testimony, and expertise. An essential component of forensic sciences is forensic toxicology, or the application of toxicology to legal issues. It is regarded as a hybrid having applications in the medical and legal fields of analytical chemistry and basic toxicology. By figuring out their concentration and interpreting the results, it permits investigations of biological tissues and fluids for the presence of poisons and medications. Because it is necessary to determine both the qualitative and quantitative properties of medicines and dangerous chemicals in order to estimate their actions and effects, forensic toxicology studies are mostly analytical in nature. Analytical toxicology, pharmacokinetics, and pharmacodynamics understanding are all necessary for the interpretation of forensic toxicological findings. These findings are crucial because they could provide insight into the impact that drugs and other potential causes played in a person's illness, conduct, or manner of passing away.